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| Preparation of TiO2/Diatomite Composites by Sol-Gel Method and Its Photocatalytic Properties |
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Received:June 30, 2023
Revised:July 12, 2023
Accepted:July 13, 2023
Published Online:October 09, 2023
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| DOI：doi：10.3969/j.issn.1007-7545.2023.11.014 |
| KeyWord:diatomit; TiO2/Diatomite composite material; sol-gel method; photocatalysis |
| Author | Institution |
| BAI Jing |
营口理工学院 辽宁 营口 |
| HE Lijie |
营口理工学院 辽宁 营口 |
| XU Xiaochen |
营口理工学院 辽宁 营口 |
| LU Yang |
营口理工学院 辽宁 营口 |
| SHANG Baihui |
营口理工学院 辽宁 营口 |
| HUANG Fuyan |
营口理工学院 辽宁 营口 |
| HONG Qixian |
营口理工学院 辽宁 营口 |
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| Abstract: |
| Diatomite was pretreated by roasting, pickling and other processes, and TiO2/diatomite composite was prepared by sol-gel method with modified diatomite and butyl titanate as precursor. The composite was analyzed and characterized by XRD, SEM, FT-IR and TG, and methyl orange was used as the degradation object to investigate its photocatalytic performance. The results show that the surface of diatomite is uniformly loaded with anatase type titanium dioxide, the grain size is 35.76 nm. TiO2/diatomite composites prepared with load ratio of 2︰1, pH=2-3 and calcination temperature of 500 ℃ have the best photocatalytic performance and good thermal stability. When the dosage of TiO2/diatomite composite is 1 g/L, the degradation rate of 60 mL (10 mg/L) methyl orange solution within 60 min can reach 92%. |
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